/*
 * DBeaver - Universal Database Manager
 * Copyright (C) 2010-2024 DBeaver Corp and others
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.jkiss.dbeaver.ui;

import org.eclipse.jface.action.IMenuCreator;
import org.eclipse.jface.action.MenuManager;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Menu;
import org.eclipse.swt.widgets.Widget;
import org.jkiss.dbeaver.model.runtime.DBRCreator;

public class MenuCreator implements IMenuCreator {

    private DBRCreator<MenuManager, Widget> creator;
    private MenuManager menuManager;
    private Menu dropDownMenu;

    public MenuCreator(DBRCreator<MenuManager, Widget> creator) {
        this.creator = creator;
    }

    @Override
    public Menu getMenu(Control parent) {
        if (menuManager != null) {
            menuManager.dispose();
        }
        menuManager = creator.createObject(parent);
        return menuManager.createContextMenu(parent);
    }

    @Override
    public Menu getMenu(Menu parent) {
        if (menuManager != null) {
            menuManager.dispose();
        }
        if (dropDownMenu != null) {
            dropDownMenu.dispose();
        }
        dropDownMenu = new Menu(parent);
        menuManager = creator.createObject(parent);
        menuManager.fill(dropDownMenu, 0);
        return menuManager.getMenu();
    }

    @Override
    public void dispose() {
        if (menuManager != null) {
            menuManager.dispose();
        }
        if (dropDownMenu != null) {
            dropDownMenu.dispose();
        }
        menuManager = null;
        dropDownMenu = null;
    }

}
